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Everybody has _____ responsibility to save water, if future generations are to enjoy  
____ similar standard of living to the one we enjoy now.
A.the; /B.a; aC./; theD.a; the
B

试题分析:考查冠词。responsibility当“责任,义务”讲时可以用作可数名词,前面用冠词a。have a responsibility for“对……负责;有责任干某事”standard作“标准,水平”讲时可以用作可数名词,前面可以加a。句意:如果想让我们的后代享受我们类似的生活标准,那我们每个人都有责任来节约用水。所以B正确。
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